CTICasesSchwannoma
Imaging findings
CT chest shows a well-circumscribed, rounded mass in the left apical hemithorax with an incomplete border sign. MRI demonstrates the mass arising from the left T1 nerve root and extending into the neural foramen.
Key takeaways
Apical chest wall masses that demonstrate an incomplete border sign on chest radiograph are characteristic of extrapleural lesions. Schwannomas are benign nerve sheath tumors that commonly arise from intercostal nerves or spinal nerve roots, presenting as posterior mediastinal or apical paraspinal masses.
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